[hamstring]

Lazlo
Hey guerilla I would hit it with ¾ strength Green Cure for sure, good thing is if this is worst case pics they don’t look too infected.

JOJO
Hey I am strictly a lowlands grower and that’s why I started the thread because it took me years to find areas where I know the ebb and flow of the flooding season. My spots have withstood 100 yr flood levels. That’s what it’s so scary to me because my native vegetation is made to grow in high moisture situations and last year was my first seeing this shit. It’s on every Fing piece on native vegetation out in the bush.

DS
I hear you on the GHS WW just starting to flower and I don’t blame you one bit for using whatever may work more power to you. PLEASE let me know how Liquid Copper works.

Funny thing about the GHS WW they didn’t show the advanced diease signs as quickly as the other strain I was growing. Yes, they had the very small spots (millimeters in diameter) on the leaves but they weren’t as far along in the disease cycle as they others. When they caught up the leaves started falling off instantly. Most other strains showed holes in the leaves and yellowing much like the pics I posted but leaves didn’t fall off right away. The WW leaves never showed any advanced signs they just yellowed and fell off. Crying shame.

Ronbo51
Thanks for the info and anecdotal experience with garden problems.

Hey brother it’s not hard for guerillas to carry a sprayer it’s just like a sleeping bag no difference. Any backpack that can carry a bed pack will carry a sprayer.
I think your advice is spot on about spraying both sides of the leaves I do the same every time.
Also not trying to lessen your input because I could be total wrong but I read the spores are released in the spring and become wind borne and actually land on the top of the leaves not the bottom.

[straintester]

*****

[ronbo51]

With nighttime humidity levels and temps so high it is just inevitable that disease will be rampant. If we could set up fans out in the bush we'd have a fighting chance. I have NEVER kept black spot at bay once a plant is infected. Of course all the biological controls will be killed by copper, sulphur, neem oil, or any other fungicide. Once the slate is cleared with fungicides then the disease has a blank slate with no competitors to run wild. It's very sad.
My understanding is that the undersides of the leaves get loaded with spores just like the tops, but UV light and dessicating wind movement keeps spores from germinating on top, mostly. Of course under severe conditions all bets are off. The shade of the underside as well as the little nooks and crannies in the leaves provide little eddies where moisture lingers and spores get going.
DS might be onto the right track in identifying resistant strains, just like tomato seed packs ID what diseases certain varieties are able to combat. Just think of the spore load being layed down for next year by all this infected plant matter.
I have seen people say 'it's just a weed". Well, actually it is a crop. One thing we are finding, especially as those Cali guys fire up all these large grows, is that marijuana is susceptible to a number of pathogens, and as we concentrate numbers of plants we see these rising to take the bait.

[hamstring]

FYI Fellow Guerrillas

Understanding your enemy is the key to defeating him. This is hard for a guerrilla to read how many of us are checking on plants daily. So this life cycle is a tough one to battle. I really think that prevention is the only way; I am going to take that advice for next year and begin spraying as soon as they hit the ground. You can always change before flowering begins but this shit doesn’t pack up and leave once established you are forced to deal with it for years to come. Relax for a second and your F*@ked.

Read that shit and think about it you cant see the spores you cant tell its infected, no way of knowing completely in the dark until the symptoms show up 5 days later.

5 days “F” me I spent my whole guerrilla career learning how not to be at the site every week.

Then 10 days or 2 weeks later the spores are spreading again. So a guerilla on average visits his or her site every 2-3 weeks by that time the infected plants have re-infected themselves. Holy Leaf Spot Batman.


Disease Life Cycle:
Black spot spores overwinter on infected foliage and canes, including infected foliage that has fallen and been left on the ground. In spring, spores are splashed up onto newly emerging foliage during rains or irrigation. Once the weather begins to stay consistently warm and humid, the spores germinate and infect the plant within one day. Visible symptoms (black spot and some yellowing) will be evident within five days, and it will produce and spread new spores within ten days. The new spores will infect other parts of the plant, or be carried on the wind to any

[straintester]

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[Cannasseur]

I think we should get to know our enemy abit better. Are you sure that black spot affects plants other than roses?

[straintester]

*****

[ronbo51]

I know it's not scientifically correct, but I call pretty much all leaf fungal disease 'black spot", or "blight". Sorry for the confusion. In the end it's the same treatment and outcome.

[straintester]

Originally Posted by ronbo51

I know it's not scientifically correct, but I call pretty much all leaf fungal disease 'black spot", or "blight". Sorry for the confusion. In the end it's the same treatment and outcome.

No problem.
The thread was most helpful thanks

[sudsandbuds]

i had a similar tyoe of fungus im pretty sure, maybe a disease of some sort but i used Safer Brand fungicide. it worked real well, i was told i had black spot mold. took me 2 yrs ro figure it out